Mitsubishi Outlander (2013+). Manual — part 66
DESCRIPTION OF CONSTRUCTION AND OPERATION
ACTIVE STABILITY CONTROL SYSTEM (ASC)
35C-17
When brake fluid pressure is increased by normal braking or ABS
The system opens the inlet valve while closing the
outlet valve to increase the brake fluid pressure in
the wheel cylinder.
VALVE CONDITION
ACC00363AD
Low pressure
accumulator
Pump
Motor
Suction
damper
Damping
chamber
Brake fluid flow
Hydraulic unit
Outlet valve
Outlet valve
Inlet valve
Inlet valve
Suction valve
Cut valve
Pressure sensor
Master cylinder
Wheel
cylinder
(Rear)
Wheel
cylinder
(Front)
Item
Power status
Open/Close
Cut valve
OFF
Open
Suction valve
OFF
Closed
Inlet valve
OFF
Open
Outlet valve
OFF
Closed
DESCRIPTION OF CONSTRUCTION AND OPERATION
ACTIVE STABILITY CONTROL SYSTEM (ASC)
35C-18
When brake fluid pressure is increased by stability control (or increased by TCL)
The system closes the cut valve to block the pas-
sage from the pump outlet to the master cylinder,
and opens the suction valve, connecting the passage
from the master cylinder to the pump inlet. The brake
fluid from the master cylinder is supplied to the wheel
cylinder.
VALVE CONDITION
NOTE:
*
The inlet valve and the outlet valve close or
open depending on driving conditions to control the
brake fluid pressure at each wheel.
ACC00363AE
Low pressure
accumulator
Pump
Motor
Suction
damper
Damping
chamber
Brake fluid flow
Hydraulic unit
Outlet valve
Outlet valve
Inlet valve
Inlet valve
Suction valve
Cut valve
Pressure sensor
Master cylinder
Wheel
cylinder
(Rear)
Wheel
cylinder
(Front)
Item
Power status
Open/Close
Cut valve
ON
Closed
Suction valve
ON
Open
Inlet valve
*
OFF
Open
Outlet valve
*
OFF
Closed
DESCRIPTION OF CONSTRUCTION AND OPERATION
ACTIVE STABILITY CONTROL SYSTEM (ASC)
35C-19
When brake fluid pressure is held by stability control, TCL or HSA (Hill Start Assist)
function
The system closes the cut valve, suction valve and
outlet valve to hold the brake fluid pressure in the
wheel cylinder.
VALVE CONDITION
NOTE:
*
The inlet valve and the outlet valve close or
open depending on driving conditions to control the
brake fluid pressure at each wheel.
ACC00363AF
Low pressure
accumulator
Pump
Motor
Suction
damper
Damping
chamber
Brake fluid flow
Hydraulic unit
Outlet valve
Outlet valve
Inlet valve
Inlet valve
Suction valve
Cut valve
Pressure sensor
Master cylinder
Wheel
cylinder
(Rear)
Wheel
cylinder
(Front)
Item
Power status
Open/Close
Cut valve
ON
Closed
Suction valve
OFF
Closed
Inlet valve
*
OFF
Open
Outlet valve
*
OFF
Closed
DESCRIPTION OF CONSTRUCTION AND OPERATION
ACTIVE STABILITY CONTROL SYSTEM (ASC)
35C-20
When brake fluid pressure is decreased by stability control (or decreased by TCL)
The system opens the outlet valve while closing the
inlet valve to store the brake fluid filled in the wheel
cylinder in the low pressure accumulator. The brake
fluid stored in the low pressure accumulator returns
to the master cylinder through the suction valve.
VALVE CONDITION
NOTE:
*
The inlet valve and the outlet valve close or
open depending on driving conditions to control the
brake fluid pressure at each wheel.
TCL OPERATION
ASC-ECU receives various kinds of information from
the engine-ECU, 4WD-ECU, steering wheel sensor,
G & yaw rate sensor, CVT-ECU, and wheel speed
sensor. When ASC-ECU determines that the driving
wheel is slipping, it suppresses the wheel slippage.
At this time, ASC-ECU controls the brake fluid pres-
sure of the driving wheel determined to be slipping
so that the torque is transferred to another driving
wheel. Basically, the operations of ABS solenoid
valve and ASC valve are the same. ASC-ECU, the
engine-ECU, and CVT-ECU communicate with each
ACC00363AG
Low pressure
accumulator
Pump
Motor
Suction
damper
Damping
chamber
Brake fluid flow
Hydraulic unit
Outlet valve
Outlet valve
Inlet valve
Inlet valve
Suction valve
Cut valve
Pressure sensor
Master cylinder
Wheel
cylinder
(Rear)
Wheel
cylinder
(Front)
Item
Power status
Open/Close
Cut valve
OFF
Open
Suction valve
OFF
Closed
Inlet valve
*
ON
Closed
Outlet valve
*
ON
Open
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